| article html file updated | 8 February 2020 18:35 CET | Update | https://www.mdpi.com/2313-5778/1/4/20 |
| article html file updated | 2 May 2019 20:59 CEST | Update | - |
| article html file updated | 16 October 2017 16:38 CEST | Original file | - |
| article xml uploaded. | 16 October 2017 16:37 CEST | Original file | https://www.mdpi.com/2313-5778/1/4/20/xml |
| article pdf uploaded. | 16 October 2017 16:37 CEST | Version of Record | https://www.mdpi.com/2313-5778/1/4/20/pdf |
